Definition: You are given a math word problem and you are supposed to make use of mathematical concepts like probability, combinatorics, linear equations, sequences/series, or simple operators like addition, subtraction, division, or multiplication to answer the given question. Choose the best option from the 5 given options and report that option.
Input: Question: The average of 4,8,12 and x is 10. Find the value of x?

 Option A: 10

 Option B: 16

 Option C: 15

 Option D: 24

 Option E: 12

Option B